Si-109 EN0 pages

Datasheett
Tank bottom valvet
Si-109 EN
Edition: 2012-07
Type KVBWt
Wafer design
Type KVBFt
Flanged design
Nominal pressurett
PN 6
Nominal sizett
DN 80-400
tMaterialttStainless steel
•t Shut-off valve
•t One-piece shaft gives
torque transmission
free of backlash
•t Easy maintenance
SOMAS tank bottom valve KVBW / KVBF is a ball segment valve adapted for mounting
on the bottom of a tank. An adaptation is made to minimize the volume between the
ball segment and the tank floor plane.
SOMAS tank bottom valve KVBW is intended for installation between the flange and the
tank bottom. KVBF is a flanged valve where one flange is adapted for mounting on the
tank bottom.
The valve body is made in one piece. The shaft is manufactured in one piece to guarantee a backlash-free transfer of the turning movement. Stuffing box has sealing elements
of white PTFE (FDA approved optional). The seat material is PTFE 53 (PTFE reinforced
with stainless steel SS2353) optionally the FDA approved Hostaflone®, that is pressed
against the ball segment. The ball segment have been modified with a flat backside.
Valve gaskets are made from Gylon. (FDA approved material).
The valves are in their basic version ATEX approved.
Valves that are both FDA and ATEX approved are optional, and must be checked with
SOMAS.
Patent-pending shaft seal made from FDA approved material is also optional. (ATEX
execution requires anti-static washer).
Surfaces facing media Polished to Ra0.8 optional.
Surfaces facing media Electro polished optional.
2 threaded connections for flushing of valve optional.
The valves can be used for shut-off of nearly all types of media.
The valves are delivered as tested units ready to use. The valves are tested complete with
selected actuators and accessories.